Girls, Dont Understand AT ALL?

The more and more My Ex of two years and I talk , he tells me that he broke up wiht me because , because he said we dont know who we are , and he doesn't want to have such a heavy commitment ( after two years.. really? ) without knowing who we really are. Im sorry if this is a stupid question , I honestly just do not understand. Has anyone ever had this happen to them? How did you cope? Did they come back? Im just really confused for some reason.

Updates:

@AnayaWillams He Told Me He Broke Up With Me... For Us :O.. I don't know Thanks For The Answers